Topological measurement and characterization of substation grounding grids based on derivative method

被引：21

作者：

Li Chunli ^{[1
]}

He Wei ^{[1
]}

Yao Degui ^{[2
]}

Yang Fan ^{[1
]}

Kou Xiaokuo ^{[2
]}

Wang Xiaoyu ^{[1
]}

机构：

[1] Chongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Elect Engn Coll, Chongqing 400044, Peoples R China

[2] State Grid Henan Elect Power Res Inst, Zhengzhou 450052, Peoples R China

来源：

INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS | 2014年 / 63卷

关键词：

Grounding grids; Derivative method; Topology; Magnetic field; ELECTRODE ARRAYS; DEPTH; SYSTEMS; RESISTIVITY; TARGETS; POWER;

D O I：

10.1016/j.ijepes.2014.05.046

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Derivative method, which avoids pathological solution of the magnetic field inverse problem, was proposed to solve the problem of drawing loss or unknown of grounding grids. First, a shape function was introduced to describe the distribution of magnetic field which is perpendicular to the surface of grounding grids. Since its odd-order derivatives contain main peaks, the 1st-, 3rd- and 5th-order derivatives were chosen to solve the topology of substation grounding grids and measure the branch current of the grid by determining the position and value of main peak, respectively. Numerical example and experimental result show that the 1st- and 3rd-order derivative method works well with low error and less computation. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：158 / 164

页数：7

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